China–United Kingdom relations () are the interstate relations between China (with its various governments through history) and the United Kingdom.

In the 19th century, the British Empire established several colonies in China, most prominently Hong Kong, which it gained after British victory in the First Opium War. Relations between the two nations have gone through ups and downs over the course of the late 20th and early 21st centuries. The People's Republic of China and the United Kingdom of Great Britain and Northern Ireland established diplomatic relations on 17 June 1954. The UK and China were on opposing sides during the Cold War, and relations were strained over the issue of Hong Kong. In 1984, both sides signed the Sino-British Joint Declaration, which eventually led to the handover of Hong Kong to China in 1997.

Following the conclusion of the Cold War and the handover of Hong Kong, a period known as the "Golden Era" of Sino-British relations began with multiple high-level state visits and bilateral trade and military agreements. This roughly 20-year period came to an abrupt end during the 2019–2020 Hong Kong protests and the imposition of the Hong Kong national security law. In the years following relations have deteriorated significantly over various security and human rights concerns. The relationship started improving during the premiership of Keir Starmer starting from 2024, particularly following his visit to China in 2026. China is the UK's fifth-largest trading partner as of 2025.

Chronology

England and the Ming Dynasty In the 1620s, English ships began arriving at Macau, a port city leased by China to Portugal. During this period, an English merchant vessel named The Unicorn sank near Macau. The Portuguese salvaged several cannons, specifically sakers, from the wreck and sold them to the Chinese around 1620. These cannons were then replicated by the Chinese as the Hongyipao, marking an early instance of military technology exchange.

On 27 June 1637, a fleet of four heavily armed English ships commanded by Captain John Weddell reached Macau in an effort to establish trade relations with China. This venture was not sanctioned by the East India Company but was instead organized by a private consortium led by Sir William Courten, with King Charles I personally investing £10,000. The Portuguese authorities in Macau, bound by their agreements with the Ming court, opposed the English expedition. This opposition, coupled with the English presence, quickly provoked the Ming authorities.

Later that summer, the English force captured one of the Bogue forts at the mouth of the Pearl River and engaged in several weeks of intermittent skirmishes and smuggling operations. The situation deteriorated further, leading the English to rely on Portuguese mediation for the release of three hostages. Eventually, the expedition withdrew from the Pearl River on 27 December 1637. The fate of the fleet afterward remained uncertain.. The full text of this book is available. Dodge says the fleet was dispersed off Sumatra, and Wendell was lost with all hands. Clapham summarizes Morse as saying that Wendell returned home with a few goods.

Great Britain and the Qing The relationship between Great Britain and the Qing regime evolved over several centuries, shaped by diplomacy, trade, military conflict, and the broader dynamics of empire.

Early contact included the 1685 visit of Michael Shen Fu-Tsung, a Chinese Jesuit, to Britain, where he met King James II. Trade officially began in 1699 when the East India Company was permitted to conduct business in Guangzhou (Canton), marking the start of sustained commercial relations.

In 1784, the Lady Hughes Affair, where a British gunner's salute led to unintended deaths, heightened tensions. This foreshadowed the cultural and legal misunderstandings that would plague future interactions. High-level diplomatic efforts followed, such as the Macartney Embassy of 1793 and the Amherst Embassy of 1816, both of which failed to establish equal diplomatic footing with the Qing court.

By the 1820s and 1830s, British merchants had turned Lintin Island into a hub for the opium trade."Shameen: A Colonial Heritage" , By Dr Howard M. Scott This illicit commerce contributed directly to the First Opium War (1839–42). Prior to the war, the East India Company's monopoly on Chinese trade was abolished (1833–35), prompting efforts by successive British governments to maintain peace. However, figures like Lord Napier took a more provocative stance, pushing for deeper market access, despite the Foreign Office under Lord Palmerston favouring a less confrontational approach Glenn Melancon, "Peaceful intentions: the first British trade commission in China, 1833–5." Historical Research 73.180 (2000): 33-47. The war culminated in a decisive British victory. British motivations were framed by Palmerston's biographer as a confrontation between a dynamic, modern trading nation and a stagnant autocracy.Jasper Ridley, Lord Palmerston (1970) p. 249. However, critics such as the Chartists and young William Ewart Gladstone condemned the war as morally reprehensible, pointing to the devastation caused by opium addiction.Ridley, 254-256.May Caroline Chan, “Canton, 1857” Victorian Review (2010), 36#1 pp 31-35.Glenn Melancon, Britain's China Policy and the Opium Crisis: Balancing Drugs, Violence and National Honour, 1833–1840 (2003)

A temporary peace was brokered with the Convention of Chuenpi in 1841, though it was never ratified. The conflict formally ended with the Treaty of Nanking in 1842, which ceded Hong Kong Island to Britain and opened five treaty ports to international trade. The Treaty of the Bogue followed in 1843, granting Britain most-favoured-nation status and legal extraterritoriality.

Throughout the mid-19th century, British influence in China expanded. From 1845 to 1863, the British Concession in Shanghai was established, later becoming part of the Shanghai International Settlement. The Second Opium War (1856–60) further entrenched British power. Following military successes, including the sack of the Old Summer Palace in 1860, the Convention of Peking granted Britain control of the Kowloon Peninsula and led to the establishment of a British legation in Beijing by 1861.

British consulates soon appeared across Chinese territory, including in Wuhan, Kaohsiung, Taipei, Shanghai, and Xiamen. Meanwhile, domestic unrest occasionally erupted, such as the 1868 Yangzhou riot targeting Christian missionaries. Despite such challenges, skilled diplomats like Li Hongzhang (1823–1901) continued efforts to mediate Qing engagement with Western powers.Technological integration followed. From 1870 to 1900, Britain developed and operated a telegraph network linking London to key Chinese ports.Ariane Knuesel, "British diplomacy and the telegraph in nineteenth-century China." Diplomacy and Statecraft 18.3 (2007): 517-537. Diplomatic ties were formalized further when China opened a legation in London in 1877, headed by Guo Songtao. Britain also advised on the Ili Crisis (1877–81), reflecting its growing influence in Qing foreign affairs.

The late 19th century saw geopolitical adjustments. After Britain's annexation of Burma in 1886, the Burma Convention acknowledged British occupation while maintaining China's symbolic suzerainty through continued tribute payments. Conflict between Britain and Tibetan forces in Sikkim led to the Treaty of Calcutta (1890), by which China recognized British control over northern Sikkim. A further agreement in 1890 fixed the border between Sikkim and Tibet.

Britain's global influence was also felt in individual incidents, such as the 1896 detention of revolutionary Sun Yat-sen in the Chinese Legation in London. British public pressure led to his release, illustrating the political significance of diaspora activism.

The 1898 Convention for the Extension of Hong Kong leased the New Territories to Britain for 99 years, and that same year, Britain secured a lease on Weihai Harbour in Shandong. An odd footnote occurred in December 1898, when the arrival of four young English women in Shanghai sparked public commentary and minor diplomatic tensions.

The turn of the century brought renewed conflict during the Boxer Rebellion (1900–1901), a violent anti-foreigner uprising suppressed by an allied force led by Britain and Japan. The resulting Boxer Protocol imposed heavy penalties on the Qing regime. Britain continued to assert influence over Tibetan affairs, most notably through the 1906 Anglo-Chinese Treaty on Tibet, which Britain interpreted as limiting China to nominal suzerainty.

By 1909, British consulates in Taiwan were closed following Japan's assertion of sovereignty, marking a shift in East Asian power dynamics. This period closed with Britain entrenched as a dominant force in China's foreign relations, trade, and territorial concessions.

Britain and the Republic of China (1912–1950)

Between 1912 and 1950, relations between Britain and the Republic of China (ROC) evolved significantly, marked by shifting alliances, conflict, diplomacy, and eventual disengagement.

Although Sun Yat-sen, who later became the founding father of the Republic of China, was rescued by British diplomats from Qing agents in 1896, early British involvement with Chinese political affairs was often shaped by colonial interests and imperial competition.

During World War I, in 1916, Britain recruited tens of thousands of Chinese labourers into the Chinese Labour Corps to support the war effort on the Western Front. On 14 August 1917, China officially joined the Allies, aligning itself with Britain in opposition to the Central Powers.

However, tensions emerged after the war. On 4 May 1919, the May Fourth Movement erupted in response to the Chinese government's failure to secure benefits from the postwar settlement. Britain had supported its treaty ally Japan over the contentious Shandong Problem, contributing to a broader Chinese disillusionment with Western democracies and a turn toward the Soviet Union for ideological and political inspiration.

At the Washington Naval Conference (November 1921–February 1922), Britain joined other powers in signing the Nine-Power Treaty, which recognised Chinese sovereignty. As part of the agreements, Japan returned control of Shandong province to China, resolving the Shandong Problem

In the years that followed (1922–1929), Britain, the United States, and Japan backed various Chinese warlords, often working against the revolutionary Nationalist government in Guangzhou (Canton). Britain and the U.S. supported Chen Jiongming's rebellion against the Nationalists, exacerbating tensions. These foreign interventions, and domestic instability, culminated in the Northern Expedition (1926–1927), which eventually brought most of China under Chiang Kai-shek’s control.Erik Goldstein, and John Maurer, The Washington Conference, 1921–22: Naval Rivalry, East Asian Stability and the Road to Pearl Harbor (2012).

On 30 May 1925, the killing of nine Chinese protesters by the British-led Shanghai Municipal Police triggered the 30 May Movement, a nationwide anti-British campaign. This incident highlighted growing Chinese resentment toward foreign imperialism.

Further unrest in Hankou (Wuhan) led to the Chen–O’Malley Agreement of 19 February 1927, under which Britain agreed to hand over its concession in Hankou to the Chinese authorities.

Between 1929 and 1931, China pursued full sovereignty by regaining control over its tariff rates, previously fixed at just 5% by foreign powers, and seeking to abolish extraterritorial privileges enjoyed by Britain and other nations in treaty ports like Shanghai. These goals were largely achieved by 1931.L. Ethan Ellis, Republican foreign policy, 1921-1933 (Rutgers University Press, 1968), pp 311–321. online